Lassie the dog was way before me.
The only famous or close Lassie I might ever meet at a Con might be this one:
https://en.m.wikipedia.org/wiki/Carlton_Lassiter
Hmmmmmm......
Do you know Air Bud?
Lassie was like the early Air Bud.
She couldnt shoot a basketball.
But she could bark.
Mostly at Timmy who managed to get himself into various situations.
Timmy falls in the well. Timmy faces off with a Mountain Lion. Timmy eats some oysters in a month with no R.
Stuff like that.
Timmy, I believe, grew up to be Luke Skywalker or Magic Johnson.
Im not sure which.